More detailed than the Basic KnowBody™, the Advanced KnowBody™ separates into the following components eyeball with extraocular muscles, 4 piece dissectible brain half, left lung with ribs, right lung with ribs (with blood vessels and bronchioles), 2 part heart, liver with gall bladder and diaphragm segment, 2 part stomach, intestine unit, torso and heart unit, and 200 hand numbered anatomical features. Features a total of 20 dissectible parts. Constructed of tough, pliable, unbreakable plastic. Life size in true proportion, anatomically accurate and dissectible into 14 detachable parts. 37 inches H. Mounted on a hardwood base. KnowBody™ torsos carry a lifetime guarantee.